Abstract

The paper adresses the benefits of the spectral domain multi-look approach for interferometric SAR data. A comparison with the wide spread spatial averaging filter is included in the beginning. Next, it is shown that the spectral domain multi-look technique can be used for improved motion compensation and further for precisely updated estimation of azimuth misregistration offsets. This leads finally to the compensation of residual motion errors in case of multi-pass airborne SAR interferometry,e.g. for the E-SAR system of DLR.